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2 Sheets-Sheet I (No Model.)

7 E. A. OVENSHIRE.

DISK HARROW. No. 511,273, Patented Dec. 19, 1893.

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I H w WA H VK m D (No ModeL) No. 511,273. v

PatentedDec. 19. 1893.

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PATENT ELIJAH A. OVENSHIRE, OF DETROIT, MICHIGAN, ASSIGNOI}. TO THE AMERICAN HARROW COMPANY, OF SAME PLACE.

DISK HARROW.

SPEGIFIGA'IIGN forming art of Letters ram No. 511,273, dated December 19,1893.

Application filed December 31, 1892. Serial No. 456,971. (No model.)

To aZZ whom it may concern:

Be it known that I, ELIJAH A. OVENSHIRE,

a citizen of the United Statesresiding at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Disk I-Iarrows; and I declare appliances hereinafter specified and claimed,

and illustrated in the accompanying drawings, in which t Figure 1 is a plan view embodying features of my invention. Fig. 2 is aside elevation. Fig. 3 is a front elevation showing the tongue in section. Fig. 4 is a horizontal section through one of the ball bearings. Fig. 5 is a cross section thereof, on the line ctr-a; Fig. 4. Fig. 6 is a detailed view of the scraper mechanism. Fig. 7 is a view of one of the axles and the disks mounted thereon, the view being chiefly in horizontal section. Fig. 8 is a view of one of the hangers for the rollers M.

My invention has more especial reference to the construction ofthe ball bearings, the self adjusting spring scraper, and the construction and arrangement of the forwardly projecting adjusting bars, although my invention is not limited to these features. I

A represents the cross bar of the frame of the harrow.

B 13' represent forwardly projecting bars of the frame. The bars A, B, B, are preferably made of metal. The bars B, B are attached to the cross bar A intermediate its extremities. To the ends of the bars B, B are attached an evener plate 0, upon the under sides of said bars, said evener plate constructed with laterally projecting arms C, 0 Above said evencr plate and on the top of the forward extremities of said bars B, B, is attached a pole platel),said pole plate beingconstructed also with laterally projecting arms D, D the arms D, D projecting laterally into proximity to the arms 0, C their outer ends being hinged or jointed together, as shown at 0?, (3. This jointed engagement of the evener plate and the pole plate, permits the pole D to be thrown over to one side the longitudinal centerof thebars B, B,where said arms may be securely fastened by a bolt or pin passed through additional lugs c, d, on each of said arms, as shown at 0', so that when the pole is thrown over to one side, the bolt holes in said lugs coincide to receive the bolt, which looks the joint in position, making the same rigid.

This special feature above described and herewith illustrated is, however, made the particular subject matter of a separate application for Letters Patent, filed simultaneously herewith, inasmuch as it has a much wider utility than its use merely upon the disk harrow.

The object of throwing the pole over to one side is to avoid side draft, and to permit the attachment of three horses to the machine without a complicated three horse evener.

It will be understood that the barrow is constructed with two wings E and E.

E represents the axles of the harrow disks F, preferably provided with a head e at one end, and a nut e at the other end.

G, G represent standards which may be made of malleable iron engaged at their upper ends with the cross bar A, and at their lower ends havinga jointed connection upon the hearings or hubs of said axles, said jointed connections preferablybein g toward the outer extremities of said axles and permitting the shifting or oscillation of the axles of thetwo Wings so as to bring the disks of each wing into desired position to cut the ground at any desired angle.

H, H represent shifter bars connected with the hubs of the axles at their rear or inner ends and bent upward therefrom and forward, their outer extremities being turned upward as shown and provided with rollers 72, 72/, respectively, arranged to travel to and fro upon the upper faces or edges of the bars B,

B, The intermediate portions of these levers are constructed to project forward at a de scending angle of suitable pitch, so that when the horses are attached to the pole or tongue and the forward end of the harrow frame is lifted in consequence, the intermediate portions of the shifter bars will be brought into a horizontal position, the bars B, B, when the horses are attached being inclined downward toward the rear thereof. It will thus be observed that when the upper edges of the bars B, B are in a horizontal plane, the intermedlate portions of the'shifter bars H, H have adownward pitch in a forward direction, this pitch, as above observed, coinciding with the rearward pitch given to the bars B, B, of the frame when the horses are attached, and so bringing the intermediate portions of the shifter bars into horizontal position. This construction permits the shifting back and forth of the disks of the harrow to change the angle of their cut, as desired, without liability of altering the depth of the cut of the disk, a point of material advantage.-

J, J represent operating levers fulcru med toward their lower ends, upon the adjacent "forwardly projecting bars B, B of the frame.

K represents a rack bar, and K a pawl to lock the bar in any given position. The link L jointedly' connects the lower end of each of the operating levers, as shown at Z, with the forward end of the adjacent shifter bar, as shown at Z. By thesemeans when it is desired to throw the axles of the disks forward or back to change the angle of the cut of the disks, a longitudinal travel is givento the shifter bars, their rollers h, h riding upon the bars, B, B. The links L are preferably connected at their forward ends to the perpendicular ends of the shifter bars as shown. The bars B, B may be formed to provide any desired or suitable track for the rollers h, h'. The perpendicular portions of the shifter bars, preferably, are passed upward on the outside of the bars B, B, to support the rollers h, h, which are engaged therewith by a suitable journal 71 It is well understood that when the machine is at work, there is a heavy draft on the shifting mechanism, and the shifter bars being thus engaged by intervening rollers upon the bars B, B, of the frame, permits the two sections of the harrow to be thrown at a desired angle with very little friction. Back of the ratchet mechanism, I also prefer to attach rollers M, on the under sides of the bars B, B upon which the top of the adjacent edge of the shifter bars may have arolling contact. These rollers may be engaged with the bars B, B by means of a hanger M, shown in Fig. 8, having an adjustable engagement with said bars.

When the sections of the harrow embodying the independent axles E are desired to be thrown rearward at their inner ends, they may, by my invention, thus be thrown straight back without changing the depth of out, instead of being thrown downward and thereby making a deeper cut at the inner ends of the sections, as has heretofore been found in other devices of this class. The adjustment of the rollers h h may be effected by providing the upper ends of the bars H, H, with two or more holes in which thejournals of the rollers may be engaged.

I will next proceed to describe my improved ball bearing, more particularly illustrated in Figs. 4 and 5, inwhich N, N represent the cones forming the hubs of the adjacent disks. These cones at their inner ends have a screwthreaded engagement upon an inner tube P. The cone N, is constructed with a round orifice, as at a, through which the axle may pass. By this construction it is evident that said cone may be adjusted so that it may be tightened or loosened as required, upon the tube P, and is held in proper position by a key N engaging in suitable notches, as at seats for said balls, the balls being held in position between said hub and the adjacent inner ends of the cones. The hub R is constructed with perforated ears R, R The standards G, G are connected with the ears I l R on one of the hubs at their lower ends. The rear ends of the shifter bars H, H may be connected with the ears R of the other hubs. Upon the periphery of each of the cones N, N is constructed a groove as shown at n in which I engage a metal worm packing 12 arranged to revolve with the cone in the direction of the adjacent disk. Spools Y are located upon the axle, also between adjacent disks where the bearings R are not employed." By this construction the ball bearings are made dust-proof inasmuch as the worm packing thus rotating, works out any dust that might otherwise be liable to work thereinto. The cars R are provided on the hub R for engaging the shifter bars with the corresponding hubs, and may be omitted from the other ball bearings.

S represents scrapers located adjacent to the disks. These scrapers are constructed of two arms S, S jointed together at their adjacent extremities, as shown at S The upper arms S of the scrapers S are jointedly secured upon a longitudinally movable adj usting transverse bar T. The lower arms S of the scrapers are secured upon a stationary transverse bar U. S is a scraper blade having a swiveled connection upon the lower end of the arm S. The swivel extendsvertically IEO so as to allow the scraper blade S" to rotate horizontally. The two arms S, S are constructed with .ofiset arms V, V, the two being connected by a bolt U, provided with a spring V the arm V having a vertical movement upon said bolt. It will be perceived that the lower arm has a yielding movement upon its hinge, so as to allow the scraper blade to yield automatically, while also any suitable tension maybe given thereto, by adjusting the nut V" upon the bolt U. The bar U is supported by arms W, united thereto at the upper ends of the last named arms, the lower ends of said arms being'engaged with the ears R as by means of a connecting bolt R It will be perceived by referring to Fig. 6 especially, that when the bar T is moved in the direction of the offset arms V V, the arm V will be depressed upon the spring V thereby depressing the arm V and throwing the lower end of the arm S in the direction opposite said offset arm, thereby forcing the scraper blade Sinto close contact with the adjacent disk. A reverse movement of the'bar'l will occasion a reverse movement of the scraper blade S and carry it farther away from the adjacent disk.

Z is a support for the seat.

What I claim as my invention is 1. In a disk harrow, the combination of a frame rovided with a cross bar A, barrow sections provided with independent axles E, E, having a jointed connection with said cross bar, forwardly projecting bars B, B connected at their rear ends with said cross bar, shifter bars H, H connected at their rear ends with said axles and having a longitudinally movable engagement upon the bars 8, B at their forward ends, operating levers to operate the shifting bars, and mechanism to hold the levers in given position, the shifter bars bent upward at their forward ends and bent downward at their rear extremities and constructed to permit the shifting of the axles horizontally without changing the depth of cut of the barrow disks, substantially as described.

2. In a disk barrow, the combination with a frame, of axles E, E provided with cutter disks and j ointedly connected with said frame, forwardly projecting bars 13, B shifter bars connected with said axles at their lower ends and having a movable engagement with the bars B, B, at their forward ends, operating levers connected with the shifting bars, the body of said shifter bars extending on a horizontal plane when the bars B, B are raised to decline rearward, substantially as set forth.

5'. In a disk barrow, the combination with a frame, of axles jointedly connected theredo with, forwardly projecting bars B, B forming a portion of said frame, shifter bars H,

H jointedly connected with said axles, op-

crating levers connected with the shifter bars, rollers connecting the forward extremities of the shifter bars with the bars B, B, said shifter bars having a longitudinal movement upon the bars B, B, substantially as set forth.

4:. In a'disk barrow, the combination with a frame, constructed with a cross bar A and forwardly projecting portions B, B, axles carrying the disks having a jointed connection with the frame, shifter bars connected with the axles at their rear ends and upon said forwardly projecting bars at their front ends, rollers supporting the shifter bars upon the portions B, B, and operating levers engaged with the shifting bars, the engage; ment of-the shifter bars upon the barsB, being vertically adjustable and longitudinally movable, the body of said shifter bars normally declining forward when the machine is at rest and extending horizontally when the bars B, B are raised, substantially as described. 5. In a disk harrow, the scraper herein described consisting of two arms jointly connected at their adjacent ends, a scraper blade having a swiveled connection with the lower end of the lower arm, said arms provided with laterally extended arms united by a spring bolt, substantially as descr1bed.

6. In a disk barrow, transverse bars T and U, arms S, S having a jointed connection and engaged upon said bars, a scraper having a swiveled engagement with the lower end of the arm S', the arms 8', S? provided with arms V V, a spring bolt uniting the latter arms, and means to adjust the tension of the spring bolt, substantially as described.

7. In a disk barrow provided with an axle F, a ball bearing having in combination cones N, N engaged upon the axle, an inner tube sleeved upon the axle, having a screw threaded engagement with said cones, a holthe combination of reg low hearing or hub R located over the adja-:

' balls located between the inner ends of. said cones and said hub,substantially as decribed.

9. In a ball bearing, the combination of the cones N, N, a connecting tube P, having a screw threaded engagement therewith, the hub It engaging the inner ends of said cones, said inner ends spirally recessed and provided'with a worm packing insaid recess, substantially as and for the purpose set forth.

10. The combination with a disk harrow, provided with a bar U and a longitudinally movable bar T, of an oscillatory arm S engaged at its upper end upon the bar T, an oscillatory arm S jointedly connected at its upper end with the lower end of the arm S upon the bar U, and a horizontally rotatable scraper having a vertically swiveled connection with the lower end of the arm S, where- In testimony whereofl sign this specificaby the scraper may be both rotated horiz0ntion in the presence of two Witnesses. tally and oscillated laterally, said scraper ELI TAU A OVENSHIRE having a spring tension upon the disk and 5 made movable toward and from the disk by Vitnesses:

the movement of the bar T, substantially as N. S. \VRIGHT, described. J. F. MILLER. 

